package com.xxx.proj.controller;

import com.auth0.jwt.interfaces.Claim;
import com.xxx.proj.entity.Result;
import com.xxx.proj.entity.User;
import com.xxx.proj.service.UserService;
import com.xxx.proj.utils.JwtUtil;
import com.xxx.proj.utils.Md5Util;
import com.xxx.proj.utils.ThreadLocalUtil;
import jakarta.validation.constraints.Pattern;
import org.hibernate.validator.constraints.URL;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.util.StringUtils;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@RestController
@RequestMapping("/user")
@Validated
@CrossOrigin
public class UserController {
    @Autowired
    private UserService userService;
    @Autowired
    private StringRedisTemplate stringRedisTemplate;

    @PostMapping("/register")
    public Result register(@Pattern(regexp = "^\\S{5,16}$") String username, @Pattern(regexp = "^\\S{5,16}$")String password){
        User u=userService.findByUserName(username);
        if (u == null) {
            userService.register(username,password);
            return Result.success();
        }else{
            return Result.error("用户名已被占用");
        }
    }
    @PostMapping("/login")
    public Result<String> login(@Pattern(regexp = "^\\S{5,16}$") String username, @Pattern(regexp = "^\\S{5,16}$")String password){
        User loginUser = userService.findByUserName(username);
        if(loginUser==null){
            return Result.error("用户名错误!");
        }

        if(Md5Util.getMD5String(password).equals(loginUser.getPassword())){
            //登陆成功
            Map<String, Object> claims = new HashMap<>();
            claims.put("id",loginUser.getId());
            claims.put("username",loginUser.getUsername());
            String token = JwtUtil.genToken(claims);
            //把token存储到redis中
            ValueOperations<String, String> operations = stringRedisTemplate.opsForValue();
            operations.set(token,token,1, TimeUnit.HOURS);

            return Result.success(token);
        }
        return Result.error("密码错误");

    }
    @GetMapping("/userInfo")
    public  Result<User> userInfo(/*@RequestHeader(name="authorization")String token*/){
        //根据用户名查询用户
//        Map<String,Object>map = JwtUtil.parseToken(token);
//        String username = (String) map.get("username");
        Map<String,Object> map = ThreadLocalUtil.get();
        String username = (String) map.get("username");
        User user = userService.findByUserName(username);
        return Result.success(user);
    }

    @PutMapping("/update")
    public Result update(@RequestBody @Validated User user){
        userService.update(user);
        return Result.success();
    }

    @PatchMapping("/updateAvatar")
    public Result updateAvatar(@RequestParam @URL String avatarUrl){
        userService.updateAvatar(avatarUrl);
        return Result.success();

    }
    @PatchMapping("/updatePwd")
    public Result updatePwd(@RequestBody Map<String,String> params , @RequestHeader("Authorization") String token){
        //校验参数
        String oldPwd = (String) params.get("old_pwd");
        String newPwd = (String)params.get("new_pwd");
        String rePwd = (String)params.get("re_pwd");

        if (!StringUtils.hasLength(oldPwd)||!StringUtils.hasLength(newPwd)||!StringUtils.hasLength(rePwd)){
            return Result.error("缺少必要的参数");
        }

        //原密码是否正确
        //调用userService根据用户名拿到原密码,与old_pwd比较
        Map<String,String> map = ThreadLocalUtil.get();
        String username = (String) map.get("username");
        User loginUser = userService.findByUserName(username);
        if(!loginUser.getPassword().equals(Md5Util.getMD5String(oldPwd))){
            return Result.error("原密码不正确");
        }

        //newPwd跟rePwd是否一样
        if(!rePwd.equals(newPwd)){
            return Result.error("两次密码填写不一致");
        }
        //调用service完成密码更新
        userService.updatePwd(newPwd);
        //删除redis中对应的token

        ValueOperations<String,String> operations = stringRedisTemplate.opsForValue();
        operations.getOperations().delete(token);
        return Result.success();



    }
}
